Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/83b9fd9a5181487b86366cae1c861a74 : SUCCESS in 4m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/dad4509e25364d8c84688d19f22ca660 : FAILURE in 2m 59s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/48f9a586b03a4d509f9cd5411b03ee46 : SUCCESS in 3m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/dd1a75ed871f48b78fc26dd57a1d56d1 : SUCCESS in 5m 04s